Modified mixture enrichment valve (since November 1980) (VW Lt 28)

65. Beginning in November 1980, a modified mixture enrichment valve began to be used on 1B1 carburetors.

66. Figure 14.32 shows two valves. The new type of valve has a flange on the diaphragm rod that prevents the sealing ring from slipping.

Figure 13.32. Old and new type mixture enrichment valve (1B1 carburetor) (Section 6A): A - Modified flush enrichment valve with flange (1) - sealing ring is brown (2); B - Old type mixture enrichment valve (without flange) - black sealing ring

67. On older type valves, the sealing ring may slip off the rod, which leads to uneven idle speed and excessive fuel consumption.

[The original can be found at: VWManual.ru]

68. If you encounter this problem, and in any case when overhauling an old carburetor, you should replace the valve with a modified one. having a flange on the traction.

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The text has been checked: Kolesnikov Artem

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Modified mixture enrichment valve (since November 1980) (VW Lt 28)

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